is 2 102586247 - 1
has 30881538 decimal digits
takes 408.457 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual276149.181764.4737 %100000010000005.77331.7232 %154.955065.0859 %
Target276149.181764.4737 %65000011000000038.14833.8524 %187.330065.8423 %
Difference---+350000-109000000-32.3750-2.1293 %-32.3750-0.7564 %

Known prime factors (1 factor, 101.6 bits, 0.00009907% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
102586247393629947972353899626798737754331101.63519185317695282970027493
32 × 19 × 59 × 3259 × 13567 × 172657 × 249097
2021-02-101726572490971.638e+91.02082.0287

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2021-02-10KrieselManual testing10000001000000131101.6355.8081.723%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-05-171997rj7Manual testing2632640.019
2010-08-19Architects Cubedm1_fw2642650.036
2012-04-23Andrew Bdell_xps_172652660.073
2013-08-28Oliver KruseJan-92662670.146
2014-05-03SMoffatManual testing2672680.291
2014-05-05SMoffatManual testing2682690.583
2014-05-08SMoffatManual testing2692701.166
2014-05-11SMoffatManual testing2702712.331
2014-12-14RichD0Manual testing2712724.662
2020-03-08el groccoManual testing2722739.324
2020-03-29SRBaseManual testing27327418.65
2020-11-08TheJudgerManual testing274276111.9


ECM factoring results:
No ECM results for M102586247


Lucas-Lehmer results:
No L-L results for M102586247


PRP results:
No PRP results for M102586247


CERT results:
No CERT results for M102586247


P-1 factor-bounds graph:
B1 = 1000000 (P-1 stage 1)
104
105
106
104
105
106
TF factor-bounds graph:
276
274
273
272
271
270
269
268
267
266
265
264
this exponent TF target: 76
TF double-checked to: 67
250
260
270
280
290
2100
2110
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Last modified: 2024-03-13T02:15:48+00:00